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Jun 16, 2024lagiath
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primes numbers finder

Mar 12, 2021mo_ak

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prime_lists=[] # a list to store the prime numbers
def prime(n): # define prime numbers
if n <= 1:
return False
# divide n by 2... up to n-1
for i in range(2, n):
if n % i == 0: # the remainder should'nt be a 0
return False
else:
prime_lists.append(n)
return True
for n in range(30,1000): # calling function and passing starting point =30 coz we need primes >30
prime(n)
check=0 # a var to limit the output to 10 only
for n in prime_lists:
for x in prime_lists:
val= n *x
if (val > 1000 ):
check=check +1
if (check <10) :
print("the num is:", val , "=",n , "* ", x )
break

Print pyramid pattern

Nov 19, 2022CodeCatch

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def print_pyramid_pattern(n):
# outer loop to handle number of rows
# n in this case
for i in range(0, n):
# inner loop to handle number of columns
# values changing acc. to outer loop
for j in range(0, i+1):
# printing stars
print("* ",end="")
# ending line after each row
print("\r")
print_pyramid_pattern(10)

Multiply Two Matrices

May 31, 2023CodeCatch

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# Function to multiply two matrices
def multiply_matrices(matrix1, matrix2):
# Check if the matrices can be multiplied
if len(matrix1[0]) != len(matrix2):
print("Error: The number of columns in the first matrix must be equal to the number of rows in the second matrix.")
return None
# Create the result matrix filled with zeros
result = [[0 for _ in range(len(matrix2[0]))] for _ in range(len(matrix1))]
# Perform matrix multiplication
for i in range(len(matrix1)):
for j in range(len(matrix2[0])):
for k in range(len(matrix2)):
result[i][j] += matrix1[i][k] * matrix2[k][j]
return result
# Example matrices
matrix1 = [[1, 2, 3],
[4, 5, 6],
[7, 8, 9]]
matrix2 = [[10, 11],
[12, 13],
[14, 15]]
# Multiply the matrices
result_matrix = multiply_matrices(matrix1, matrix2)
# Display the result
if result_matrix is not None:
print("Result:")
for row in result_matrix:
print(row)

Bogo Sort

Nov 19, 2022CodeCatch

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# Python program for implementation of Bogo Sort
import random
# Sorts array a[0..n-1] using Bogo sort
def bogoSort(a):
n = len(a)
while (is_sorted(a)== False):
shuffle(a)
# To check if array is sorted or not
def is_sorted(a):
n = len(a)
for i in range(0, n-1):
if (a[i] > a[i+1] ):
return False
return True
# To generate permuatation of the array
def shuffle(a):
n = len(a)
for i in range (0,n):
r = random.randint(0,n-1)
a[i], a[r] = a[r], a[i]
# Driver code to test above
a = [3, 2, 4, 1, 0, 5]
bogoSort(a)
print("Sorted array :")
for i in range(len(a)):
print ("%d" %a[i]),

Topological sort

Nov 19, 2022CodeCatch

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#Python program to print topological sorting of a DAG
from collections import defaultdict
#Class to represent a graph
class Graph:
def __init__(self,vertices):
self.graph = defaultdict(list) #dictionary containing adjacency List
self.V = vertices #No. of vertices
# function to add an edge to graph
def addEdge(self,u,v):
self.graph[u].append(v)
# A recursive function used by topologicalSort
def topologicalSortUtil(self,v,visited,stack):
# Mark the current node as visited.
visited[v] = True
# Recur for all the vertices adjacent to this vertex
for i in self.graph[v]:
if visited[i] == False:
self.topologicalSortUtil(i,visited,stack)
# Push current vertex to stack which stores result
stack.insert(0,v)
# The function to do Topological Sort. It uses recursive
# topologicalSortUtil()
def topologicalSort(self):
# Mark all the vertices as not visited
visited = [False]*self.V
stack =[]
# Call the recursive helper function to store Topological
# Sort starting from all vertices one by one
for i in range(self.V):
if visited[i] == False:
self.topologicalSortUtil(i,visited,stack)
# Print contents of stack
print(stack)
g= Graph(6)
g.addEdge(5, 2);
g.addEdge(5, 0);
g.addEdge(4, 0);
g.addEdge(4, 1);
g.addEdge(2, 3);
g.addEdge(3, 1);
print("Following is a Topological Sort of the given graph")
g.topologicalSort()

return multiple values from a function

Jun 1, 2023CodeCatch

0 likes • 2 views

def calculate_values():
value1 = 10
value2 = 20
return value1, value2
result1, result2 = calculate_values()
print("Result 1:", result1)
print("Result 2:", result2)